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Thread: 401 engine block with damaged oil tube that runs under cam.

  1. #1
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    401 engine block with damaged oil tube that runs under cam.

    Working on 1966 wildcat after tearing down engine we found damaged oil tube under the cam. Is there any way to repair?

  2. #2
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    probably shouldn't be fixed. needs pics.

  3. #3
    66 Chassis Manual will probably be helpful

    https://www.teambuick.com/reference/...ssis/index.php


    there's a schematic of the oil circuit on page 60-103.

    are you talking about the main oil galley or are you talking about one of the lifter feed galleys?

    how big is the hole? what caused it? how many miles does the engine have with this condition?
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  4. #4
    You may be able to remove the area, drill/tap for fittings and replace the section with a hard line. It is going to be a lot of work compared to starting with an undamaged 401 block. I would only consider this for a numbers matching show car.
    Steve B.



    67 GS 525 Buick Stage IV
    66 GS Convertible
    65 GS HT
    63 Riv
    02 Subaru WRX Turbo
    03 Ford Cobra Convertible (Factory Supercharged)

  5. #5
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    I have talked to Carmen Faso about the oil passage modification for clearance for a stroker crank and rods.
    It can be done, would take a bit of work. Not for the faint of heart...as apparently I am since I have not done it yet!
    Ted Nagel
    (6)65 Wildcats; 65 Riviera; 65 Special Wagon; 65 GS; 65 Skylark; 67 Wildcat; 67 California GS; (2)68 GS400; 69 GS 350; 70 GS Stage 1; Wanted: time to fix 'em

  6. #6
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    Bad oil tube

    Quote Originally Posted by Dr. Frankenbuick View Post
    You may be able to remove the area, drill/tap for fittings and replace the section with a hard line. It is going to be a lot of work compared to starting with an undamaged 401 block. I would only consider this for a numbers matching show car.
    Thanks for your help, i though about doing that because of matching number, but machine shop that tested the block found areas around the cylinder ends that showed.some hair line cracks.
    They recommend scrapping block. Now I don't know if I should replace with another nail head block or a hi performance v8. Any suggestions?

  7. #7
    425 would drop right in and it was an option for you in 66


    Sent from my iPhone using Tapatalk
    Steve B.



    67 GS 525 Buick Stage IV
    66 GS Convertible
    65 GS HT
    63 Riv
    02 Subaru WRX Turbo
    03 Ford Cobra Convertible (Factory Supercharged)

  8. #8
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    425 would drop right in and it was an option for you in 66

    Quote Originally Posted by Dr. Frankenbuick View Post
    425 would drop right in and it was an option for you in 66


    Sent from my iPhone using Tapatalk
    OK thanks will see if I can find one.

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